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Optocouplers

Optocouplers continue to be a cornerstone component in electronics, merging safety with functionality to meet the rigorous standards of today’s technological demands. Whether for professional, industrial, or personal use, their ability to couple electrical isolation with signal integrity makes them invaluable in complex electronic designs.

What are Optocouplers Used for?

Optocouplers, also known as optoisolators, are essential components in modern electronic systems. They efficiently transfer electrical signals between two isolated circuits while maintaining electrical separation. These devices leverage light to transmit data safely, ensuring that high voltages or surges on one side do not disrupt or damage the components on the other. Optocouplers are indispensable in environments where electrical isolation is crucial for safety and equipment integrity.

Popular Types Include

  • Phototransistor Optocouplers: These are commonly used to convert light signals into electrical signals using a phototransistor.
  • Photo-SCR Optocouplers: Suitable for high-voltage applications needing solid-state reliability.
  • Photo-Darlington Optocouplers: Offers higher current transfer ratios than phototransistors.
  • Photo-TRIAC Optocouplers: Ideal for controlling AC power loads.

Salient Features of Optocouplers

  • Prevents direct electrical connection between circuits.
  • Typically withstands thousands of volts.
  • Ensures quick signal transmission without delays.
  • Saves space on printed circuit boards (PCBs).

What Benefits Do They Offer?

  • Enhanced Safety: Minimises the risk of electric shocks and equipment damage.
  • Reliability: Operates effectively under a wide range of environmental conditions.
  • Versatility: Compatible with many digital and analogue signal interfaces.
  • Cost-Effective: Reduces the need for additional safety components.

Broad Range Applications

  • Industrial Automation: For controlling motors, drives, and other heavy machinery.
  • Telecommunications: Used in systems that require electrical isolation between high-frequency signal circuits.
  • Medical Equipment: Ensures patient and operator safety by isolating high voltages.
  • Consumer Electronics: Provides isolation in devices like power supplies and audio equipment.

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Toshiba
Rohs Verified
TLP185(SE, Toshiba
498 In Stock
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125 +
£ 0.14
TLP2395(E(T, Toshiba
Pre Order
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TLP185(BLL,SE(T, Toshiba
898 In Stock
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50 +
£ 0.15
100 +
£ 0.13
150 +
£ 0.12
Toshiba
TLP590B(F), Toshiba
Pre Order
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VO2631-X017T, Vishay
999998998 In Stock
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1000 +
£ 1.21
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HCPL-2611-020E, Broadcom
132 In Stock
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2 +
£ 2.57
Vishay
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ILQ621, Vishay
33 In Stock
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5 +
£ 2.44
25 +
£ 2.22
50 +
£ 2.00
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IL300-DEFG, Vishay
1284 In Stock
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1 +
£ 2.37
10 +
£ 1.85
25 +
£ 1.67
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HCPL-3700-300E, Broadcom
1316 In Stock
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2 +
£ 3.43
20 +
£ 3.26
50 +
£ 3.06
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HCPL-2232-300E, Broadcom
38 In Stock
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£ 5.09
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£ 3.82
25 +
£ 3.59
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HCNW2601-000E, Broadcom
999999997 In Stock
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3 +
£ 2.99
15 +
£ 2.23
60 +
£ 2.12
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ACNW3190-000E, Broadcom
Pre Order
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£ 4.50
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£ 4.27
25 +
£ 4.00
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TLP292-4(E(T, Toshiba
68 In Stock
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10 +
£ 0.91
20 +
£ 0.77
50 +
£ 0.75
Broadcom
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6N136-000E, Broadcom
239 In Stock
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£ 1.34
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£ 0.89
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£ 0.76
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HCPL-0201-000E, Broadcom
131 In Stock
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£ 2.66
5 +
£ 2.26
25 +
£ 1.86
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HCNW2211-000E, Broadcom
3 In Stock
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1 +
£ 3.56
10 +
£ 2.97
50 +
£ 2.48
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HCNW4503-300E, Broadcom
276 In Stock
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2 +
£ 2.59
10 +
£ 1.82
40 +
£ 1.63
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HCPL-181-00BE, Broadcom
649 In Stock
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1 +
£ 0.56
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HCPL-316J-000E, Broadcom
41 In Stock
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1 +
£ 4.46
9 +
£ 3.90
23 +
£ 3.33
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HCPL-7800-000E, Broadcom
300 In Stock
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£ 6.88
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£ 6.06
25 +
£ 5.70
TLP268J(E(T, Toshiba
Pre Order
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TLP293(BL,E(T, Toshiba
23 In Stock
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25 +
£ 0.22
250 +
£ 0.20
625 +
£ 0.18
Lite-On
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LTV-847S, Lite-On
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25 +
£ 0.38
Lite-On
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LTV-844S, Lite-On
598 In Stock
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25 +
£ 0.44
Optek
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OPI120, Optek
48 In Stock
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25 +
£ 8.21
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New Items
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PC817X2NIP0F, Sharp

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FOD3184V, Fairchild Semiconductor

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1SNA645022R2700, ABB

1SNA645022R2700, ABB

Interface Relays - R600 Series Interface relays and optocouplers are useful to link sensors and actuators in the process, which are connected to the PLC via conventional wires. The interface modules providing both voltage-current level adaptation and isolation. Build in RC-circuits to increase the contact-life Screw or spring terminals available Compact design with a width from 6 mm or 12 mm LED for relay status Holes for holding 2 mm test plugs to simplify any measurements
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TLP2066(F), Toshiba

TLP2066(F), Toshiba

Photocoupler, Buffer Logic Output (Totem-Pole), Toshiba Optocouplers, Toshiba
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AQY272, Panasonic

AQY272, Panasonic

AQY SSR These PCB mount DIP4-pin solid state relays are of the flat packaged type with dimensions of 9.3x8.8x3.9mm. These PCB solid state relays also have high senstivity and a low on-resistance. Typical applications include the controls of various types of loads such as test and measurement equipment, data communications, power supplies sensors etc. Various 4 pin DIP or SMT packages Highly sensitive and low on resistance Low level off state leakage current Operating temperature range of -40 to +85°C Controls various types of loads such as test and measurement equipment, data communications, power supplies sensors etc Approvals UL Recognised for Canada & US Sorry Your request could not be completed at this time
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ACPL-W454-000E, Broadcom

ACPL-W454-000E, Broadcom

Optocoupler, Intelligent Power Module (IPM) Interface, Avago Technologies Avago Technologies optocouplers for IPM (Intelligent Power Module) interface exhibit short propagation delay, fast IGBT switching, high common mode transient rejection and wide operating temperature range. Avago Technologies R2Coupler™ isolation products provide the reinforced insulation and reliability needed for critical automotive and high temperature applications. Optocouplers, Avago Technologies
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TLP521-4SM, Isocom

TLP521-4SM, Isocom

Optocoupler, Phototransistor Output, Isocom Components The TLP521-4 are quad channel optocouplers. Each channel is composed of a Gallium Arsenide infra-red emitting diode and a silicon phototransistor. Package style for this devices is 16 pin, with surface mount. Performance guaranteed over -55°C to +125°C temperature range High current transfer ratio 7500V electrical isolation Optocouplers, Isocom Components
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TLP521BL, Isocom

TLP521BL, Isocom

Optocoupler, Phototransistor Output, Isocom Components Optocouplers, Isocom Components
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VOM617A-2X001T, Vishay

VOM617A-2X001T, Vishay

Optocoupler, Transistor Output, VOM Series, Vishay Semiconductor Vishay low input current optocoupler with a phototransistor output VOM617A and VOM618A series protect equipment users from electrical shocks and protect the microprocessors within these systems from being damaged by voltage spikes. VOM617A and VOM618A series provides up to 3750Vrms of voltage Isolation Applications include Isolation in AC adapters, switch mode power supplies, programmable logic controllers, Industrial controls, telecom systems, smart meters, office equipment, power on Internet and solar Optocouplers VOM617A and VOM618A have an operating temperature up to 110 degrees Celsius. Optocouplers, Vishay Semiconductor
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SFH6186-4T, Vishay

SFH6186-4T, Vishay

Optocoupler, Transistor Output, SFH Series, Vishay Semiconductor VO617A and VO618A series provides up to 5300 Vrms of voltage Isolation. VO615A, VOL617A and VOL628A series provides up to 5000 Vrms of voltage Isolation. VOM617A and VOM618A series provides up to 3750 Vrms of voltage Isolation. VO617A, VO618A, VOL617A, VOL628A, VOM617A, and VOM618A Applications include Isolation in AC adapters, switch mode power supplies, programmable logic controllers, Industrial controls, telecom systems, smart meters, office equipment, power on Internet and solar. Optocouplers VO615A, VO617A, VO618A, VOL617A, VOL628A, VOM617A, and VOM618A have an operating temperature up to 110 degrees. Optocouplers, Vishay Semiconductor
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Optocouplers and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Optocouplers or any other product.
This depends on the Optocouplers individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Optocouplers and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Optocouplers.
Yes. We keep updating our stock frequently and if a product like Optocouplers is not in stock then we will let you know.